computer Integrated Manufacturing (CIM) Systems having determining role in the modern industry. These systems contain essentially two different equipments for transporting materials between workstations: - conveyors c...
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A new notion of refinement and several other new operators are proposed that allow for a compositional algebraic characterization of action systems and serializability in distributed database systems. A simple design ...
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A version of the two phase commit protocol is formally derived from its specification. The design starts with an initial design phase that properly reflects the logical structure of the protocol as a sequence of layer...
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We aim at a unified and coherent presentation of net models for concurrency like Petri nets and dataflow networks from the perspective of modularity and substitutivity. The major goat is to achieve a better understand...
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It is proved that the fixpoint approach to deductive data bases extends naturally to the disjunctive and stratified disjunctive data bases. A method is formalized to evaluate atomic queries in both cases which is base...
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ISBN:
(纸本)0897913523
It is proved that the fixpoint approach to deductive data bases extends naturally to the disjunctive and stratified disjunctive data bases. A method is formalized to evaluate atomic queries in both cases which is based on a backward chaining computation of some minimal clauses containing the query. Author thinks that the interest of this work lies as much in the nature of the extension as in the results obtained. Going from the definite world to the disjunctive one it is shown that the fundamental difference lies in the need for a calculus of clauses rather than a calculus of atoms. The foundations are given of backward chaining for a calculus of clauses.
It was recently shown that no data link protocol with finite sequence-numbers and deterministic finite state transmitter and receiver can tolerate transmitter and/or receiver crashes and recoveries, unless they have a...
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In order to understand the cellular learning mechanisms in the nudibranch mollusk Hermissenda crassicornis, a model of the type B photoreceptor cell including the dynamical aspects of the voltage-clamp recording syste...
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In order to understand the cellular learning mechanisms in the nudibranch mollusk Hermissenda crassicornis, a model of the type B photoreceptor cell including the dynamical aspects of the voltage-clamp recording system was formulated in the Hodgkin-Huxley-type equations in terms of each relevant ionic current: IA IC and INa. Measurements of these currents from conditioned animals revealed that only IA and IC were substantially reduced across the soma of type B cell. The current model was effective in producing a quantitative estimation of the actual ionic currents. A computer simulation revealed that IA was so sensitive to the parameters in the recording system that the divergence in the experimental data increased. This was further confirmed by using the triangular waveform as a command signal (+60 mV in amplitude from a holding potential of -60 mV).
A model of the luminosity-type (L-type) horizontal cell layer in the retina was constructed in terms of the soma, axon terminal, and gap junction to understand the spatiotemporal properties. The soma and axon terminal...
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A model of the luminosity-type (L-type) horizontal cell layer in the retina was constructed in terms of the soma, axon terminal, and gap junction to understand the spatiotemporal properties. The soma and axon terminal were expressed by the Hodgkin-Huxley-type equations based on the relevant ionic currents. The L-type horizontal cell layer was simulated by connecting each L-type horizontal cell model with a linear gap junction. While the model response explained the experimental data well, the dynamics features were not fully realized without a feedback path from the horizontal cells to the photoreceptors.
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